# Mathametic functions.

• Aug 18th 2008, 09:36 AM
SH33
Mathametic functions.
If function f is f(n) = f(n-1)+f(n-2).

And f(1) = 3
f(3) = 10

What is f(6) ?

Could some one help me how to solve this problem - thanks.
• Aug 18th 2008, 10:01 AM
Plato
$\begin{array}{l}
f(3) = f(2) + f(1) \\
10 = f(2) + 3 \\
\end{array}$

Now solve for $f(2)$.
Now apply the rule to find $f(6)$.
• Aug 18th 2008, 10:11 AM
SH33
Thanks for the help.